Mechanical movement



EQT. condom, R. MECHANICAL MOVEMENT.

APPLICATION FILED u'ov.23. I916- PatentedSept. 27,1921.

W avwewfoz W W I .E. T. CONDON,v JR.

MECHANICAL MOVEMENT.

APPLICATION FI'LED NOV. 23. 1916.

1,391,997. PatentedSept. 27,1921.

4 SHEETS-SHEET 2.

E. T. CONDON, Jn.

MECHANICAL MOVEMENT. APPLICATION FILED NOV. 23, 1916- 1,391,997. te Sept- 27,1921.

, I 4 SHEETS-SHEET 3.

E. T. CONDON, In. MECHANICAL MOVEMENT.

AAAAAAAAAAAAAAAAAAAAAAAAAA 6. 1,391,997. PatentedSept. 27, 1921.

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Mull Ml EDWARD T. CONDON, JR., 0F MORRISTOWN, NEW JERSEY.

MECHANICAL MOVEMENT.

Specification of Letters Patent.

Patented Sept. 27, 1921.

Application filed November 23, 1916. Serial No. 132,935.

T 0 all whom it may concern:

Be it known that I, EDWARD T. CoNDoN, Jr., a citizen of the United States, residing in Morristown, in the county of Morris and State of New Jersey, have invented a cer tain new and useful Mechanical Movement, of which the following is a specification.

' The invention relates to a mechanical movement designed primarily for use in and as a part of an automatic brake mechanism for talking machines of the rotary disk type, although it may be found useful in other and different connections.

In an earlier application filed by'me on October 8, 1912, Serial Number 724,500, patented May 28, 1918, No. 1,867,378, I have de scribed and claimed a brake mechanism which may be used without adjustment or regulation on talking machines of the type indicated in connection with any standard disk record, notwithstanding the variations in the pitch of its sound-groove, and which will automatically stop the machine when the tone-arm comes to rest at the end of the selection, no matter how long or how short that selection may be.

The object of my present invention is to simplify and otherwise. improve automatic brake mechanism of the same general character as that to which my previous application relates, and, further, when the talking machine is driven by an electric motor, to provide means actuated by the movement of the brake member toward and from its operative position to respectively open and close the electrical circuit of the motor to stop and start the same.

To this end the invention comprises the specific embodiments thereof which for purposes of illustration are shown in the accompanying drawings and described herein, and, more generically, the several novel features of construction, arrangement, and combination of elements particularly pointed out in the appended claims. r

Referring to the drawings, Figure l'is a view, partly in elevation and partly in vertical section, of the upper part of a talking machine equipped with my improved brake mechanism; Fig. 2, an enlarged broken plan view, with certain parts in section and others broken away, of the brake mechanism shown in Fig. 1 and its operative connections; Fig. 3, a section, further enlarged, on the irregular line 3-3 of Fig. 2; Figs. 4 and 5, en-' larged details, partly in section and partly in elevation of parts shown in Fig. 3; Fig. 6, an enlarged detail, partly in section, of parts shown in Fig. 2; Fig. 7, a plan view, with parts broken away, of a modified form of my brake mechanism, showing broken portions of such parts of the machine as are necessary to make clear the operative relationship of the brake mechanism therewith; Fig. 8, a section on the line 8-8 of Fig. 7; and Fig. 9,:a view similar to that of Fig. 7 but showing the parts of the mechanism in a different position.

The same reference characters are used to indicate like parts throughout the several figures of the drawings.

As illustrated in Figs. 1 to 6 of the drawings, l'is the top of a cabinet which is out which openings are covered by a bed-plate 2, alsoprovided with suitable openings, secured to the upper side of the cabinet top. The vertical spindle 3 of the machine, which away .to form suitable openings therein,

is here intended to be driven by an electric placed the record disk5. The tone-arm 6,

carrying the usual sound-box and needle, is mounted with a universal joint connection within the upper end of a cylindrical supporting boss 7the outwardly flanged lower end of which, resting upon the upper side of the bedplate 2, is secured by screws passing through the plate to'the inner end of the horn 8 thus fixing the boss and horn in position the one above and the other below the plateby means of a sleeve 9 which, mounted to rotate within the boss and held in sition therein with its upper end bearing against an inwardly projecting flange at the upper end of the boss by a pin 10 passed diametrically through and fixed in the walls of the sleeve, with outer ends serving as trunnions bearing in a trunnion-ring 11 recessed in the inner wall of the boss, is cut back at its upper end to provide a concave spherical seat 12 for the convex spherical outer surface 13 of a collar 14 attached to the end of thetone-arm andsec'ured in position by a pin 1.5,passed diametrically through and fixed outer ends serving as trunnions, extend outwardly through slots 16, slightly wider than the diameter of the pin, out in the upper edges of the sleeve on opposite sides thereof and bear in a trunnion-ring 17 recessed in in the tone-arm and collar, whose the inner wall of the boss. A suitable opening 18 (Figs. 1 and 2) is provided in one side of the boss for the insertion of the pin 15; and the wall forming the lower bearing surface of the trunnion-ring 11 is cut away on opposite sides of the boss, at 19 (see Fig. 3), to admit the ends of the pin 10 to the trunnion-ring from below, the sleeve being inserted in place within the boss before the latter is secured to the horn. After the parts have been assembled, two threaded stops 20 (Fig. 2) are inserted in openings provided therefor in the wall of the boss and their inner ends, extending into the trunnion-ring 17, one on each side of an end of the pin 15, serve as stops to limit the rotary movement of the collar, and of the sleeve, within the boss and consequently the horizontal swinging movement of'the tone-arm.

The automatic brake mechanism comprises the following elements: Fixed to the lower end of the sleeve 9, which is extended below the bed-plate 2 through an'opening therein and, as constructed, is caused to rotate with a'slight lost motion by the swinging movement of the tone-arm, are a gear-sector 21 which extends forward horizontally,,below the'bed-plate, through an opening 22 provided therefor by cutting away a section of the upper wall of the horn, and a ring 23 which fits the inner surface of the horn and closes the annular space between the sleeve and the horn. In mesh with this gear-sector is a pinion 24 which with an integral friction disk 25 is mounted upon a headed stud 26 secured to the under side of the bed-plate 2, and, rotatably mounted upon the lower hub 27 of the pinion, between the disk and the head of the stud, is a trip member comprising a horizontal rockarrn 28 which is held in frictional contact with the lower side of the disk by a leaf-spring 29 attached to the arm and bearing on the upper surface of the disk and carries mounted in its outer end a pin30 projecting upwardly and downwardly therefrom. A rotary internal cam, constructed by fastening to the back of a circular flanged plate 31 an annular camplate 32 provided with a high face or cam projection 33 along a portion of its inner edge forming a grooved'pulley as illustrated,

is mounted by means of a sleeve 34 to which the flanged plate is secured to rotate upon a headed stud 85 fixed to the under side of the bed-plate and is driven, preferably at a reduced speed, by a belt 36 from a pulley 37 of smaller diameter mounted upon the spindle of the machine. The lower end of the pin 30, which extends downwardly within the annular cam-plate approximately to the back of the flanged plate, is preferably cut away on its sides to form in the plane of the cam-plate a horizontal wedge 38 pointed oppositely to the forwardly pointing end of a wedge-block 89 secured to the top of the flanged plate slightly in front of the forward end of the cam projection so as to form between the inner edge of the camplate and its own adjoining edge a groove adapted to permit the passage of the wedgeshaped lower end of the pin. WVhen the tone-arm is swung outwardly toward the limit of its outward movement, as in starting the machine, a pin 40 fixed and projecting downwardly from the lower side of the gear-sector, bearing against the rearwardly extended end of a leaf-spring 41 attached to the rear edge of the arm 28, throws the outer end of the arm back and'holds the wedgeshaped lower end of the pin 30 against the inner edge of the annular cam-plate. The upper end of thepin 30 and also a pin 42 mounted on the upper side of the gear-sector extend upwardly above the plane, and in the operation of the mechanism are adapted to engage'the rear end, of a horizontal brakelever 43 which is pivotally mounted upon a stud 44 fixed to the under side of the bedplate and carries at its forward end a brake member consisting of a cylindrical post 45 which at its reduced threaded lower end 46 is screwed into the brake-lever and secured thereto by a lock-nut 47 and, extending upwardly through a slot 48 provided therefor in the bed-plate beneath the turntable and in proximity to its downwardly flanged rim, carries rotatably mounted on its cylindrical reduced upper end 49 a collar 50 upon which is fixed an annular brakeshoe 51 of leather or other suitable frictional material. A wedge-shaped spring 52, which is fixed in a boss 53 secured to the upper side of the bed-plate so as to bear against the cylindrical block 45, serves to yieldingly hold the brake either in inoperative position at the inner end of the slot 48 or pressed outwardly into operative engagement with the rim of-the turn-table.

Operatively related to the brake member is a normally closed electric switch consisting of two spring contact members 54 and 55 which, provided respectively with cooperating contact points 56 and 57 are suitably mounted in a block 58 of insulating material secured to the under side of the bed plate 2 and are electrically connected in the usual or in any suitable manner to the actuating circuit of the motor. The extended outer end of the contact member 54 projects outwardly into the path of a cylindrical block 59 of insulating material which is mounted upon the reduced threaded lower end of the brake member in such manner that when the brake is withdrawn to its inoperative position the block allows the con tact member to spring inwardly to closed position but, as the brake moves outwardly to engage the rim of the turntable, wipes against the cont-act member and forces it outwardly to open the contacts of the switch.

j the This feature will of course be omittedin case the'machine is driven by means other than an electric motor.

The operationof the above described mechanism will be readily understood. The

it is held by the spring.52. The turn-table is thus automatically releasedand the switch contact member "54, also released, springs to closed position to close the actuating circult of and so start the motor, which causes the.

turn-table and record to rotate and with them the rotary internal cam. Meanwhile the spring 41 has been put under tension by the pin 40 and throws back the outer end of rock-arm 28, which has been rocked forward by reason of its-frictional engagement with the pinion ee'wh'eh during the outwardimovement of the tone arm is caused to rotate ina clockwise direct omjand presses the lower wedge-shaped end of the pin of thepin is swung against the inner edge of the cam-plate The needle being theninserted-in and following the spiral sound-groove of the re volving record, slowly swings the tone-arm inwardly and through the frictional bearing with the pinion 24, which is now caused to rotate in a counter-clockwise direction, continues'toiyieldinglyfhold the lower end of the pint-30 on the rock-arm against the inner edge of been .m'oved out of engagement with the spring 41. Consequently, so long as the tone-arm continues to move inwardly, the outer end of therockfarm which at every revolution of the ca'niQis. thrown forward when its high, face engages the lower end back by i the rotation of the pin on immediatelythe high face of the cam passesand the pin, carried behind the inner edge of the {wedge-block 39, follows the groove between this block, and. the

adjacent. edge of the cam. When, however,

the needle reaches the inner end of the sound-groove offthe record and the tonearm ceases to; move, the outer end of the rock-arm,,th rown forward on the next revoe lution of-th'e calm, remainsin position (see Fig. 2) so that the lower end of the pin is engaged by the inner edge of the wedgeeblock which thusthrows the outer end of the rock-arm farther forwardand, through the upper end of the pin,rocksthebrake-lever tov apply the brake and at the same time to open the switch andstop the motor Inthe modified form shown in Figs. 7 to 9 of the drawings, the brake mechanism,

tachable to the cam plat'e after the pin 40 has substantially all of which is mounted upon and carriedby a base-plate, is'readily atmachines. The base-plate is screwed or otherwise secured to the top of the cabinet beneath and adjacent the peripheral rim of the turn-table. A grooved pulley '61 carrying on its upper side a pinion 62 is mounted. to rotate upon a headed stud 63 fixed to the base-plate near its front edge and is operatively connectediby a belt 64: with a grooved pulley 65 fixed to the spindle of the machine below the turntable. A finger 66, which projects from the base-plate andisfbent upwardly at its outer end, serves to hold the: belt in place within the groove of the pulley' Pivotally mounted at its forward end upon a hub on the lower side of the grooved pulley Glis a segmental plate 67 which is provided with aycurved slot 68, the inner edge of which is toothed and forms a gear-sector 69 concentric with the pivotal bearing of the plate, and is operatively connected with the tone-arm of the machine by a pin 70 fixed in or to the under side of the tone-arm and loosely bearing at its lower end in a radial slot 71 cut in an arm 72 of the plate extend ing rearwardly beyond the periphery of the turn-table. In mesh with the pinion 62 is a pinion 78, preferably of larger size to run at a reduced speed, which is mounted by means of a sleeve to rotate upon a headed stud 74 fixed in the base-plate and carries on its under side a'cam 75 and, adjacent the forward face of the high edge of the cam, a forwardly pointing wedge-block 76. A small pinion 77, carrying above it a friction disk 78, is mounted within the curved slot of the plate, in mesh with the gear-sector, upon a headed stud 79 fixed in the base any of the standard disk talking.

plate, and, mounted to rotate upon the upper hub of this pinion, between the top of the disk and the head of the stud, is ,a tripmember comprising a rock-arm 80 which is held in frictional engagement with the disk by a leaf-springJSl attached to its lower side and bearing onth-e under side of the disk. The rock-arm carries near its outer end, which extends forwardly below the pinion 73,an upwardly projectingpin 82 in operative relationship with the cam 75 and at its extreme end a downwardly projecting pin 88. An elbow brake-lever 84, which is mounted to rock uponva headed stud 85 fixed in the base-plate, carries mounted on a stud 86 set in the end of its rear or outer arm 87 a circular brake 88 of leather or other suit-v able frictional material, while its inner arm 89, slightly upset on its convexly curved rear edge '90, extends forwardly between the corner 91' of'the segmental plate and the downwardly projecting pin 83 at the end of the rock-arnr, The brake-lever is yieldin'gly boss 93-secured to the base-plate and bears at its curved outer end against a finger 94L upset from the outer arm of the brake-lever. The brake-lever 84 is held in its inoperative position, as shown in Fig. 7 by the mere en-, gagement of the high point of the curved portion of the spring 96 with the finger 94 but is cammed by the same curved portion into operative position when it is moved slightly in a clockwise direction as indicated in Fig. 9. A pin 95 fixed to the upper side of the segmental plate near the corner 91 is adapted, when the plate is swung around in proximity to the brake-lever, to wipe against the back and press spring 96 fixed to the rear'outer edge of the rock-arm 80.

The operation of the modified'form of the brake mechanism is substantially the same as of that first described. Thus, the movement of the tone-arm outward to place the needle in the outer end of the sound-groove of the record causes the segmental plate 67 to move with it and the corner 91 of the plate, striking the curved edge 90 of the inner arm of the brake-lever, throws the brake to its inoperative position, releasing the turn-table which thereupon begins to revolve, while at the same time the outer end of the rock-arm is pressed forward by spring 96 to hold'the pin 82 against the edge of the cam (see Fig. 7 Then, so long as the tone-arm continues to swing inwardly after the needle has been placed in the sound-groove of the record, the pin is held pressed against the cam by reason of the frictional connection between the rock-arm and the rotating pinion and so passes through the groove betweenthe cam and the wedgeblock 76. But when the needle reaches the inner end of the sound-groove of the record and the tone-arm comes to rest, the pin on the next revolution of the cam is thrown out into and remains in position to be engaged by the outer edge of the wedge-block, which, acting thereon (see Fig. 9), forces the outer end of the rockarm farther back and causes the pin 83 to wipe the outer edge of the inner arm of the brake-lever and throw the brake outwardly into engagement with the rim of the turntable, stopping the machine.

It will be noted that the brake mechanism described is simple in construction, is positive and entirely automatic in its operation, and'is located out of the way and, in the form first described where it is placed and operatively connected with the tone-arm below the top of the cabinet, entirely concealed from view. Furthermore, the spring on the rear edge of the rock-arm, which is engaged and put under tension when the tone-arm is near the limit of its outward swinging movement, serves effectively to prevent any accidental application of the forward a leafa trip member, a cam brake in case the tone-arm is moved outwardly in the setting of the needle. after the turn-table hasbeen released and has started to revolve. And the slight lost motion in the connection between the tone-arm and the gear-sector also insures against the accidental application of the brake during the normal operation of the machine because of any irregularity in the inward swinging movement of the one-arm due to an imperfect centering of the turn-table or of the rec ord thereon or otherwise.

While I have explained the principle of my invention in connection with what I now consider the two best modes in which to apply that principle, it will, of course, be understood that the specific embodiments of the invention shown and described by way of illustration can be variously modified in their several parts and in the details of their construction, within the scope of the appended claims, without departing from the spirit or sacrificing the advantages thereof.

What I claim as'new, and desire to secure by Letters Patent, is-

1. In combination, a trip member, a rotary member having two radially and circumferentially spaced trip-engaging abutments which are adapted one to engage and move thetrip member into the path of the second and the second to engage'and actuate the trip member, and means normally acting on the trip member to keep it from being actuated by the second-mentioned abutment.

2. In combination, a cam and fixed to move therewith a wedge so'positioned, with its forwardly pointing end slightly below and its base above the high face of the cam, as to leave a passage between the two parts, means for driving the cam and wedge, a movable element operatively related to the cam and wedge and having a bearing surface capable of passing between the said two parts, and means for normally holding the movable element pressed against the face of the cam so as to move it back out of the path of the wedge when moved thereto by the high face of the cam.

V 3. In combination, two moving members, driven from one of the moving members and having two acting faces separated one from the other and adapted one to engage and move the tri member into the path of the second, an means driven from the second moving member and rendered inoperative on the stopping thereof for yieldingly pressing the trip member when released by the first acting face back out of the path of the second acting face of the cam.

4. In combination, two moving members, a cam driven; from one of said moving members and fixed thereto a wedge so pomovement of the second moving member for yieldingly pressing the trip'member against the face of the cam so as to move it out of the path of the wedge when released by the high face of'the cam.

5. In combination, two moving members, a trip member, a cam driven from one of the moving members having two acting faces separated one from the other and adapted one to move the trip member into the path of the second, and means driven from the second moving member through a connection having a slight lost motion for. yieldingly pressing the trip member when released by the first acting face back out of the path of the second acting face of the cam.

6. In combination, a rotating member, a

swinging member,a sleeve operatively connected with a slight lost motion to rotate with the swingingmember, a trip member, a cam driven from the rotating member having two acting faces separated one from the other and adapted one to move the trip member into the path of the second and the second to actuate the trip member, and

means including a gear-sector mounted on the sleeve,a pinion in mesh with the gearsector, and a frictionalconnection between the pinion and the trip member for yieldingly' pressing the trip member when released by the first acting face back out of the path of the second acting face of the cam duringthe movement of the swinging member.

7 In combination, a rotating member, a

traveling member a'dapted to be swung inwardly by the rotating member, a sleeve operatively connected to rotate with the swinging movement of the traveling member, a trip member, a'cam having two acting faces one to move'the trip member into the path of the secondand the second to actuate the trip member, and means including a gear-sector mounted on the sleeve, a pinion in mesh with the gear-sector, and a frictional connection between the pinion and the trip yieldingly pressing the trip member when released by the first acting face back out of the path of the second acting face of' the cam during the inward swinging movement of'the traveling'member. 8. In combination, a rotating member, a

traveling member, a movable element, means actuated from the rotating member and'renthe movable element in other and adapted one to 'arm intothe path of the second and the 7 said arm when -movement of the element dered operative by the stoppingof the forward movement of the travelingmember for engaging and moving the movable element in one directiomand means actuated by the return of the traveling member to its start ing position for moving the movable element in an opposite direction.

9. In combination, a rotating member," a traveling member adapted to be swung inwardly by the rotating member, a movable element, a movable arm adapted to engage with and to throw the movable element in one direction, means driven from tlie'rotating member and rendered operative by the stopping of the inward swinging movement of the traveling member for actuating the movable arm to move the movable element, and means actuated by the return of the traveling member to itsstarting position for restoring the movable element to its original position.

10. In combination, a rotating member, a traveling member adapted to be swung inwardly bythe rotating member, a movable element, a movable arm adapted to throw one directioma cam driven from the rotating member having two acting faces separated one from the move the movable second to actuate the movable'arm to throw the movable element, means including a sleeve connected torotate with the swinging movement of the traveling member. a

gear-sector mounted on the sleeve, a pinion in mesh with the gear-sector, and a fric-'- tional connection between the pinion and the movable arm for yieldingly pressing the released bythe first acting face out of the path ofthe second acting face of the cam during the inward, swinging movement of the traveling member, and means actuated by an outward swinging.

traveling member to starting position for restoring the movable element to its original holding the movable arm pressed back out position and yieldingly ofthep tthof the second acting face'of the cam.

11. In combination, a rotating member, a

traveling member, a

a contact element, means driven fromthe rotating member and rendered operative by the stopping'of the forward movement of the traveling "member for actuating the movable and through it the contact' element, and means actuated by the return of the traveling member to its starting'position for restoring themovable element to its original position andthereby releasingthe contact I ele'm'entf 12;- In combination, a bed-plate, two moving members mounted one to rotate above the bed pIate upon a spindle extending up through anopenlng berei and" the other 115 movable stop element,

' an opening in the bed-plate,

to swing horizontally above the bed-plate and operatively connected with a slight lost motion to a sleeve extending down through a trip member located below the bed-plate, and means located and driven from the spindle below the bed-plate and rendered operative by a connection with the sleeve below the bed plate for actuating the trip member.

13. In combination, a bed-plate, two moving members mounted one to rotate above the bed-plate upon a spindle extending up through an opening therein and the other to swing horizontally above the bed-plate, means for driving the spindle to rotate the rotating member and through it to swing inward the swinging member, a trip member located below the bed-plate, a cam located and driven by the motor below the bed-plate having two acting faces separated one from the other and adapted one to move the trip member into the path of the second and the second to actuate the trip member, asleeve operatively connected witha slight lost motion with the swinging member and extending down below the bed-plate through an opening therein, and means including a gear-sector mounted on, the sleeve below the bed-plate, a pinion in mesh with the gearsector, and a frictional connection between the pinion and the trip member for yieldingly pressing the trip member when released by the first acting face back out of the path of the second acting face ,ofthe cam during the inward movementof the swinging member. a

14:. In combination, a bed-plate, two moving members mounted one to rotate above the bed-plate upon a spindle, extending through an opening therein and the other to travel above the bed-plate be swung inwardly by the rotating member, means for driving the spindle to r'otatethe rotating member and through it to swing inwardly the traveling member, a movable element, a movable arm adapted tov throw the movable element in one direction, a cam located and driven from the spindle below the bed-plate having two acting faces separated one from the other and adapted one to move the movable arm into the path ofthe second and the second to actuate. said arm to throw the movableelemenu; a sleeve operatively connected with a slight lost motion with the traveling member and extending down below opening therein, tively connected means locatedand operawith the sleeve below the bed-plate for yieldingly pressing the movable arm when released by the first acting face back out of the path of the second acting face of the cam during the inward swinging movement of the traveling member, and means located below the bed-plate and actuated by the return of the traveling memoriginal and adapted to v the bed-plate through an 1 starting position ber toitsouter starting position both for throwing the movable element backto its position and for yi'eldingly pressing themovable arm back out of the path of the second whenreleasedby the first acting face of the cam. x

p 15; In combination, a rotating member, a traveling member, an electric motor adapted to drive the rotating member and through it the traveling member, a brake for the rotating member, a switch in the actuating circuit of the motor, means driven from the motorand rendered operative by the stopping of the forward movement of the traveling member for applying the brake to the rotating member and in so doing opening the switch, and means actuated by the return of the traveling member to its starting position for removing the brake from the rotating member and in so doing effecting a closure-of the switch. a r v 16. In combination, a bed-plate, two movable members mounted one to rotate .and the other to travel above the bed-plate, a brake adapted to engage said rotatable member, a movable element controlling said'brake, and means driven from the rotatingmember and rendered operative by thestopping of the traveling member for actuating the movable element to eifectthe braking-operation, said means for actuating the movable element and the operative connections thereof able member, and means operatively con-v nected with the rotating 'a'nd traveling members and rendered operative by, the stoppin of the traveling member for actuating s'ai brake member, said actuating means and-the operative connections thereof with both the rotating and traveling members being 10-" cated below the bed-plate. 7

, ,18. In- ,comblnation, a traveling member,

a rotating'member, an electric -motor for ioo lot

driving said rotating member, a switch in, p

the motor circuit, a .bi'ake adapted tor-effect the closing of said switch whenmoved into starting position, and means operated by the movement of said traveling 'member to starting position for moving. said brake to starting position. V a

19. In combination, a rotating member, a traveling member, brake member, means rendered operative by the stopping of the traveling member for moving said brake member into engagement with the rotating member, and: means rendered operative by the movement ofthe traveling member to for moving said brake memberfout ofengagement with the rotating. membern a Y a v 20. In combination, a rotating member, a traveling member, a brake, means rendered operative by the stopping of the traveling member for moving said brake into braking position, and means operated by the return of the traveling member to starting position for moving said brake to nonbraking position.

21. In combination, a rotating member, a traveling member, aseoond member moving with the traveling member, a connection between said second member and the traveling member permitting a limited reverse movement of the traveling member independent of said second member, a brake member, and means operated by the stopping of said second member for effecting the actuation of said brake member.

22. In combination, a rotating member, a traveling member, a member driven from the rotating member and provided with two cam faces, a tripping member operatively connected with the traveling member and normally urged thereby into engagement with one of said cam faces but engaged and operated by the second of said cam faces upon the stopping of the traveling member, and a brake member engaged and moved into braking position by said tripping member.

23. In combination, a rotating member, a traveling member, a movable stop element, a spring element adapted to maintain the stop element in either operative or inoperative position, means driven from the rotating member and rendered operative by the stopping of the forward movement of the traveling member for actuating the movable element and through it the spring element, and

. the brake element and storing the element in its original position and thereby releasing the spring element.

24. In combination, a bed-plate, two moving members mounted one to rotate and the other to travel above the bed-plate, a movable stop element, a spring element adapted to maintain the stop element in either operative or inoperative position, and means located and operatively connected below the bedplate, driven from the rotating member and rendered operative by the stopping of the traveling member for actuating the movable element and through it the spring element.

25. In combination, a bed-plate, two moving members mounted one to rotate and the other to travel above the bed-plate, a movable brake element, adapted to engage said rotating member, and a spring element adapted to maintain the brake element in operative or inoperative position, and means located and operatively connected below the bed-plate with the rotating and traveling members and rendered operative by the stopping of the traveling member for actuating through it the spring element.

26. In combination, two moving members, a movable stop element, a contact element adapted to make and break a circuit, a spring element adapted to maintain the stop element in its operative position, and means driven from one and rendered operative by the stopping of the other of the two moving members for actuating the movable element and by it the contact and spring elements,

' EDWARD T. CONDON, JR.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,391,997, granted September 27, 1921, upon the application of Edward T. Condon, J12, of Morristown, New Jersey, for an improvement in Mechanical Movements, errors appear in the printed specification requiring correction as follows: Page 2, line 51, after the word. edge insert the word and; page 4, line 75, for the c0mp0und Word one-arm read tonearm; page 7, line 29, claim 22, after the word by insert the words the last-named movement of; and that the said Letters Patent Should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 24th day of April, A. D., 1922.

[SEALJ KARL FENNING,

Acting Commissioner of Patents.v 

